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Add 30/35 and 4/42

30/35 + 4/42 is 20/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 42 is 210
  2. For the 1st fraction, since 35 × 6 = 210,
    30/35 = 30 × 6/35 × 6 = 180/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    4/42 = 4 × 5/42 × 5 = 20/210
  4. Add the two fractions:
    180/210 + 20/210 = 180 + 20/210 = 200/210
  5. 200/210 simplified gives 20/21
  6. So, 30/35 + 4/42 = 20/21

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